Development of flood boundary of urban areas using HEC-RAS software

0196269 - UH-J 20023090 RIV GB eng C - Conference Paper (international conference)
Brych, Karel - Dittrt, František - Eliáš, Václav
Development of flood boundary of urban areas using HEC-RAS software.
FRIEND 2002 - Regional Hydrology: Bridging the Gap between Research and Practice. Wallingford: International Association of Hydrological Sciences, 2002, s. 237-242. ISBN 1-901502-81-3. ISSN 0144-7815.
[FRIEND 2002 - Regional Hydrology: Bridging the Gap between Research and Practice. Cape Town (ZA), 18.03.2002-22.03.2002]
R&D Projects: GA ČR GA103/99/1470
Keywords : flood plain inundation * flood hazard map * HEC-RAS model
Subject RIV: DA - Hydrology ; Limnology

Flood hazard maps of urban areas in the Orlice Valley were developed using HEC-RAS software. The calculated boundary of the flood extension area was fitted to the observed boundary by optimizing Manning`s roughness coeficient. These parameters were then used to compile a flood boundary map corresponding to 100-year flood.A digital terrain model (DTM) is pre-requisite for map compilation in the ArcView enviroment. The ZABAGED/1 state atlas on a 1:10000 scale, available for selected regions of the Czech Republic, is usually being used as the DTM. This system contains land-surface elevation data in a vector format. Taking into account the limited altimetric resolution of ZABAGED, we used geographic maps on a 1:1000 scale derived from regional aerial photography.
Permanent Link: http://hdl.handle.net/11104/0091908